Door for washer drums



March 25, 1930; H. PRTl-IERS DOOR FOR hsangnnbis Original Filed 1: 0.15, 1927 A TTORNE Y.

Patented Mar. 2 1930- HAROLD PROTHERS, OF MILWAUKEE, WISC OF MILWAUKEE,WISCONSIN,

PATENT; 0F

FICE

ONSIN, ASSIGNOR T0 VORCLONE COMPANY,

A CORPORATION OF WISCONSIN DOOR FOB WASHER DRUMS Application filedDecember 15, 1927, Serial No. 240,136. Renewed August 29, 1929.

. the washer drum and to minimize the possibility of leakage withoutdestroying the ease of opening. and closing the door. In the drawings:Figure l'shows a transverse section through a washer embodying thisinvention.

Figure 2 is a detail in front elevation ofa fragment of the deviceshowing the door partially open.

Like parts are identified by the same reference characters in bothviews.

The washer drum 5 is of usual construction with the exception that thedoor opening may now be placed considerably lower through the use of thepresent invention than has heretofore been possible. The obvious purposein lowering the door is to facilitate the introduction and removal ofheavy materials from the washers. Diifioulties heretofore experiencedwith leakage have made it necessary to have the washer doors relativelyhigh. i

The usual legs for supporting the drum are shown at 6, the cylinder isillustrated at 7 and an arm shown at 8 provides a door stop at9 and apulley uide at 10 for the counterbalance r'ope 11 w ich, after passingaround another pulley at 12 carries a weight 13.

4 1 The washer door-15 is provided at 16 with a hinge of the nature of apiano hinge upon which the door may pivot for movement to its openposition. It will be noted, however,

' 'thatat its lower margin, door 15 is provided with a deep channel 18,one flange of which laps the interior of the drum 5 along the margin ofthe door opening. An angle memly the margin of the drum apparently makesit impossible to open the door. This difiiculty is overcome by anarrangement which permits the door to move bodily upwardly for adistance suflicient to disengage the door from the interior surface ofthe drum. To this end the jamb portion 20 of the washer drum to whichthe door is hinged, is itself hinged at 21 for a limited oscillatorymove ment with respect to the remainder of drum 5. An effectivelimitation of the movement of jamb 20 is provided for by extendingaxially the pintle 22 of hinge 16 and providing anchorage loops at 25secured at 26 to the washer frame.

The counter-balance rope 11 is secured to gaging the margin of the dooropening in the drum and at rest upon the angle iron seat 19. It will beobvious that very little liquid or vapor can escape from the door inView of the eflective interior overlap thus provided.

When it is desired to introduce or remove articles from the washer, theoperator grasps the door by means of its handle 28 and, assisted'by thecounterweight 13, readily lifts the door bodily to the extent permittedby the anchorage loops 25. In this initial lifting move- -ment the doorwill retain approximately its original angular position, this being madepossible by the oscillation of the jamb memjamb 20 retains its elevatedposition until thedoor has reached a position such as to require onlythe hinged movement of jamb 20 to accomplish its ultimate closure. If nocounter-weight were provided, or if the point of application of thecounter-weight were changed, it might be difiicult to manipulate theoperation of the hinged j amb 20. In the device illustrated, however,the door acts in its hinged closing movement like a lever of the anintermediate first class in that it has a tendency to oscillate aboutthe point 27 at which the counterweight is attached and, to the extentto which this tendency exists, the force exerted to close the doormaintains pintle 22 in its elevated position. It is only when the dooris pulled bodily. downwardly in the final closing movement that the jamb 20 oscillates downwardly to the full line position of Figure 1.

It is, of course, understood that a spring would be fully equivalent forthe counterweight shown. Hence reference to this feature in the appendedclaims will be understood to be generic.

I claim: I

1. The combination with a drum provided with a door opening, of a hingeddoor interiorly overlapping substantially continuously the margin ofsaid opening in liquid tight relation thereto, and means for afiordingclearance between said door and said margin preliminary to the hingedopening movement of said door.

2. In a device of the character described, the combination with a drumhaving a hinged door jamb mounted for limited oscillatory movement ofits free margin, of a door hinged to said margin and formed to overlapinteriorly a portion of said drum.

3. The combination with a drum having a door opening and provided with ahinged door connecting portion, of a door hinged to the free margin ofsaid portion and formed to overlap interiorly the lower margin of saidopening and a counter-weight connected with ortion of said door wherebyto facilitate t e bodily movement of said door with said drum portionand the independent hinged movement of said door.

4. In a device of the character described, the combination with a drumhaving a hinged portion provided with a pintle at its free margin, of adoor for said drum hinged to said pintle and a counter-Wei ht connectedwith an intermediate portion 0 said door.

5. In a device of the character described, the combination with a drumhaving a hinged portion provided with a pintle at its ree margin, of adoor for said drum hinged to said pintle, and a counter-weight connectedwith an intermediate portion of said door, said drum bein provided withlimitin means defining t e extent of oscillation 0 said hinged drumportion.

6. In a device of the character described, the combination with adrum-having a'hin ed portion provided with a intle at its ee margin, ofa door for sai drum hinged to said pintle, and acounter-weight'connected with an intermediate portion of said door, saiddrumbeing provided with means defining the extent of oscillation 0 saidhinged drum portion and comprising a loop within which said pintle isguided.

7 The combination of a drum provided with a door opening and an interiorseat adj acent'the lower margin thereof, of a jamb member in hingedconnection with the top of said drum, a door in hinged connection withthe free margin of said jamb memberand provided with a portion adaptedin one posltion of said jamb member to overlap interiorly the lowermargin of thesaid door opening and in another position of said j ambmember to clear said margin.

8. The combination of a drum provided with a door opening and aninterior seat adjacent the lower margin thereof, of a jamb member inhinged connection with the top of said drum, a door in hinged connectionw1th the free margin of said 'amb member and provided with a portion aaptedin one pos1- tion of said jamb member to overlap interiorly thelower margin of the said door opening and in another position of saidJamb member to clear said margin, a stop means limiting the oscillationof said ]a mb member beyond said last mentionedpositlon and acounter-weight connected with an mtermediate portion of said door wherebto assist in the hinged opening movement 0 said door and also. inthelifting of said door with said jamb member toward said last mentionedpo: sition.

9. In a washer, the combination with a liquid-tight housing providedwithv a door opening, of a door having hinged connecting section, saidsection being hlngedly connected to the housing and movable to and fromclosed position upon said housing, and said door being movable to aclosed position upon said housing to interiorly overlap the edge of saidopening in substantially liquid tight engagement therewith.

10. In awasher, the combination with {a drum having a door opening closeto the horizontal central plane of the drum, of a door z havinga hingedconnecting section, said section being hingedly connected to the housingand movable to and from closed position upon said drum, and said doorbeing slidably movable in the course of relative movementbetween saiddoor and section to and from a position in which its lower marginoverlaps the lower edge of said opening in substantially liquid-tightrelation.

HAROLD PROTHERS.

